Note O - Stockholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Thousands				3 Months Ended		6 Months Ended		78 Months Ended
	Nov. 04, 2022	Aug. 05, 2022	Jun. 10, 2022	Sep. 25, 2022	Sep. 26, 2021	Sep. 25, 2022	Sep. 26, 2021	Sep. 25, 2022	Mar. 11, 2016
Common Stock, Dividends, Per Share, Declared (in dollars per share)		$ 0.45	$ 0.45	$ 0.45	$ 0.35	$ 90	$ 70
Treasury Stock, Value, Acquired, Cost Method				$ 822		$ 1,892
Sixth Stock Repurchase Plan [Member]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased (in shares)									1,200,000
Treasury Stock, Shares, Acquired (in shares)								1,101,884
Treasury Stock, Value, Acquired, Cost Method								$ 39,000
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased (in shares)				98,116		98,116		98,116
Plan 10b5-1 [Member]
Treasury Stock, Shares, Acquired (in shares)						35,434
Treasury Stock, Value, Acquired, Cost Method						$ 1,892
Treasury Stock Acquired, Average Cost Per Share (in dollars per share)						$ 53.39
Subsequent Event [Member]
Common Stock, Dividends, Per Share, Declared (in dollars per share)	$ 0.45